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Fichiers Externes (Lecture/Écriture)

Paramètres Exécution Résultats

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Lecture/Écriture – Élément FILES

L’élément FILES définit les caractéristiques des fichiers externes.

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Élément FILES

Operand

Number — File number

Identifier — File name used for identification on READ and WRITE blocks, VARIABLES elements, Variable modules, EXPRESSIONS elements, and Expression modules

System Name — Operating system file name enclosed in double quotes, or the connection string that opens an ADO connection to the data source in double quotes

Access Type — File type

Structure — File structure. If you use Format, specify the exact FORTRAN-style format or C-style format, which must be 255 characters or fewer.

End of File Action

Comment Character — Character indicating comment record

Initialize Option — Action to be taken at beginning of each simulation replication for sequential files

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Élément FILES (Recordset)

Operand

Recordset Name — Name used to identify the recordset in READ or WRITE blocks, VARIABLES elements, Variable modules, EXPRESSIONS elements, and Expression modules

Recordset CommandText — Text of the command that will be used to open the recordset

Recordset CommandType — Type of command entered in the Recordset CommandText

Les Recordsets dans Arena doivent correspondent aux Plages EXCEL

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Plage de données – EXCEL 2003

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Plage de données – EXCEL 2010

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Lecture/Écriture – ARENA & EXCEL

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Élément VARIABLE (Direct Read)

Operand

Linked File— Name of the file from which to read the variable's value or values. You can use any file access type supported by Arena except sequential text files and Lotus spreadsheet (.wks) files.

Linked Recordset— Name of the recordset in the specified linked file from which to read values. This field is available only if you specify a Linked File. Arena uses the 1-D Array Index and 2-D Array

Index properties to determine the amount and position of data to read from the recordset. A recordset is required for all file types except .xml. The recordset size must be equal to or greater than the ranges of the arrays specified for the variable.

File Read Time— Specifies when to read the values from the file into the variable. If you select PreCheck, the values for the variable are read while the model is still in Edit mode, before checking and compiling the model. If you select BeginSimulation, values are read when the model is compiled, prior to the first replication. If you select BeginReplication, values are read prior to each replication.

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Block WRITE

Operand

File ID—File to be written to

Format—Format to use in interpreting data

Record Number—Record number to be written

Variables or Expressions—List of variables or expressions to write

Le bloc WRITE permet d’écrire des données dans des fichiers externes.

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Block WRITE

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Lecture/Écriture – ARENA & EXCEL

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Lecture/Écriture – ARENA & EXCEL

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Lecture/Écriture – ARENA & EXCEL

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Agenda de la séance

− Bonnes Pratiques de Simulation;

− Concepts Intermédiaire de simulation;

• Elements: SETS, NICKNAMES, STATESETS;

• Blocks: WAIT, SIGNAL, PREEMPT;

− Exemple d’un système Manufacturier;

− Lecture/Écriture Externe:

• Elements: FILES, VARIABLES;

• Blocks: WRITE;

− Champs d’application de la simulation;

• Exemples de projet industriel.